฿20,006+ Cheap flights to Portsmouth
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/10. Fares are subject to change and may not be available on all flights or dates of travel.
Flights to Portsmouth in 2025
Find the latest flights to Portsmouth in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 17,341 searches and data was last updated on 13 September 2025.
Find flight deals to Portsmouth
Cheapest flights to PortsmouthExplore the most affordable flight options available to Portsmouth. Find the lowest fares based on data from user searches, with prices last updated on 13 September 2025.
Explore the most affordable flight options available to Portsmouth. Find the lowest fares based on data from user searches, with prices last updated on 13 September 2025.
Cheapflights Fare Finder
Use the filters below to find and compare flights to Portsmouth that are best for you.
Fly from
Route
Depart
Return
Price
BangkokSouthampton
BKK - SOU
BKKSOU
Bangkok Suvarnabhumi
Mon 20/10
08:55-19:30
2 stops40h 35m
Southampton Eastleigh
Tue 28/10
12:25-18:25
2 stops47h 00m
BangkokSouthampton
BKK - SOU
BKKSOU
Bangkok Suvarnabhumi
Wed 11/3
03:00-19:40
2 stops23h 40m
Southampton Eastleigh
Mon 16/3
09:30-13:05
2 stops20h 35m
BangkokSouthampton
BKK - SOU
BKKSOU
Bangkok Suvarnabhumi
Sun 21/12
20:30-19:40
2 stops30h 10m
Southampton Eastleigh
Sun 4/1
09:30-12:15
2 stops19h 45m
BangkokSouthampton
BKK - SOU
BKKSOU
Bangkok Suvarnabhumi
Fri 19/12
18:55-19:40
2 stops55h 45m
Southampton Eastleigh
Sun 4/1
09:30-13:05
2 stops20h 35m
BangkokSouthampton
BKK - SOU
BKKSOU
Bangkok Suvarnabhumi
Sun 5/10
20:00-19:30
2 stops29h 30m
Southampton Eastleigh
Sat 15/11
09:30-12:15
2 stops43h 45m
BangkokSouthampton
BKK - SOU
BKKSOU
Bangkok Suvarnabhumi
Tue 14/10
21:05-19:30
2 stops28h 25m
BangkokSouthampton
BKK - SOU
BKKSOU
Bangkok Suvarnabhumi
Wed 15/10
20:00-19:30
2 stops29h 30m
BangkokSouthampton
BKK - SOU
BKKSOU
Bangkok Suvarnabhumi
Sun 11/1
18:55-19:40
2 stops31h 45m
BangkokSouthampton
BKK - SOU
BKKSOU
Bangkok Suvarnabhumi
Sun 11/1
12:15-08:50
1 stop27h 35m
BangkokSouthampton
BKK - SOU
BKKSOU
Bangkok Suvarnabhumi
Thu 16/10
21:05-12:05
2 stops21h 00m
Best time to book a flight to Portsmouth
Have a flexible travel schedule? Discover the best time to fly to Portsmouth with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight to Portsmouth
How long is the flight to Portsmouth?
On average, a flight from Bangkok to Portsmouth takes 18 hours 20 minutes. Flights to Portsmouth from other popular cities in Thailand will vary in length. Below are a few examples of popular routes and their flight times.
When is the cheapest time to fly to Portsmouth?
Use this chart to determine the cheapest time to fly return from Bangkok to Portsmouth. Price data was last updated on 16 December 2024.
Users looking for the lowest fares to Portsmouth should consider flying on Friday mornings, when prices are typically cheapest. Budget-minded travellers will want to avoid Sunday at midday, when prices are usually at their highest.
Weekly flight availability to Portsmouth
The most flights from Bangkok to Portsmouth are scheduled on a Monday (6 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (6 on average).
Rainfall in Portsmouth by month
Plan your trip to Portsmouth by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Portsmouth ranges from 25.0 - 76.0 mm per month. December is typically the wettest month, when rainfall can reach 76.0 mm. July is typically the driest time to visit Portsmouth when rainfall is around 25.0 mm.
Temperature in Portsmouth by month
Plan your trip to Portsmouth by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Portsmouth, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 18.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 4.0 C).
FAQs about flying to Portsmouth
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Search flights to Portsmouth by cabin class
Find flights to Portsmouth, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Fly with Cheapflights
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights to Portsmouth?
When you search for this flight to Portsmouth, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the best flight for you.
Why should you use Cheapflights to find cheap flight tickets to Portsmouth?
It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights to Portsmouth.
Can Cheapflights find flights to Portsmouth with no change fees?
Users can book flights with no change fees policies with our dedicated filters. Book flights to Portsmouth flexibly with Cheapflights today.
Can Cheapflights notify me if prices for flights to Portsmouth become cheaper?
Yes! Start tracking prices for Portsmouth flights today and get alerted when prices change. To subscribe and begin receiving alerts, click the bell icon next to the flight deals above and provide your email address.